Device for the determination of the alcohol content, in the dampening solution of printing chn an or the like

摘要

The present invention relates to an automatic device for the determination of the alcohol content, in the dampening solution of printing machines or the like. Dollars a the measuring device for the automatic determination of the freezing point reduction in includes a chamber, into which the moist means sample by means of a valve is initiated and to an extent is cooled below its freezing point. In this chamber is a thermometer centrally disposed, with which the reaching of the freezing point is recognized and the freezing point temperature is measured. The difference of the freezing point to the pure water is used as a measure of the alcohol concentration of the moistening agent. A peltier element serves as the electrical cooler. The hot side of the peltier cooler is located in contact with the sample flowing in excess, in order to remove the waste heat. This causes the device the required cooling rate. Dollars a is a small computer controls the regular automatic repetition of the determination of.